Cells that have a nucleus are referred to as ________ cells; those that lack a membrane-bound nucleus are called ________ cells

Fill in the blank(s) with correct word


eukaryotic; prokaryotic

Biology & Microbiology

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The umbilical cord functions to

(a) carry waste products in the blood from the fetus to the mother. (b) carry waste products in the blood from the mother to the fetus. (c) carry oxygen in the blood from the mother to the fetus. (d) do both a and c.

Biology & Microbiology

Which element's isotope is commonly used to determine when biological samples such as fossils, were formed?

A. oxygen B. hydrogen C. carbon D. nitrogen E. sulfur

Biology & Microbiology

Sea turtles lay their eggs in the sand on the beach. When the sea turtle eggs hatch, the babies migrate to the water without any assistance from the parent. This behavior, in which they are born with, is known as

A. All of the answer choices are correct. B. behavior learned by observation. C. innate behavior. D. learned behavior. E. habituation.

Biology & Microbiology

Which kind of chemical reaction involves the attachment or removal of a phosphate group? 

A. oxidation-reduction B. acid phosphorylation C. phosphorylation D. hydrolysis

Biology & Microbiology